The who is married to double Olympic gold medal-winning sailor Sarah Ayton, had been desperate for a podium place in London 2012 after he was swept from first to fourth in the final in Beijing.
We take a look at some of the tears and cheers of winning athletes at the London 2012 Olympic Games.
Sporty Duchess of Cambridge meets record-breaker Ben Ainslie and his team in Weymouth
Meeting members of Team GB Sailing Squad August 2012
Day fourteen: Luke Patience and Stuart Bithell of Team GB celebrate finishing second and winning the silver medal in the Men's 470 Sailing.
Family fortunes: Nick Dempsey with his wife Sarah, three-year-old son Tom and five-month-old Oscar
Large image of the Team GB Gold Medal Winner Miniature Sheet - Ben Ainslie
Mugging terror of British female Olympic sailing pair in Rio
Ben Ainslie won a fourth straight sailing gold medal
Come see Royal Mail's official olympic stamps honouring London 2012 gold Olympians for Team GB.
pCatherine, Duchess of Cambridge meets with members of the Team GB sailing squad on Day 10 of the London 2012 Olympic Games at the Weymouth /p
Gold Medal Winner stamp - Sailing: Finn Men’s Heavyweight Dinghy, Ben Ainslie.
Ben Ainslie wins gold in the men's Finn class
View striking Olympic Photos of London 2012 - see the best athletes, medal-winning performances and top Olympic Games moments.
Briton Ainslie breaks sailing record, bows out
Nick Dempsey has continued Team GB's medal rush after securing a windsurfing silver medal at London Dorian van Rijsselberge secured the gold medal.